The weather service reports that between 1960 and 2010, there have been 469 days with low temperatures below zero; only 16 of those occurred with no snow on the ground.

Meanwhile, the weather service has issued a wind chill advisory for Chicago and much of the Illinois from 6 p.m. this evening until 9 a.m. tomorrow. The National Weather Service expects wind gusts to blow at 30 miles per hour, making the weather feel like it's 20 degrees below zero.

"If you are gonna be outdoors for a while just be sure to … cover up,” said Castro. "You can get frostbite in these conditions in a half an hour."

Areas west and north of Chicago are likely to be even colder. Temperatures in Kane, Lake and McHenry counties should all reach below zero tonight and may not recover to above-zero temperatures until mid-morning tomorrow, according to the National Weather Service.

Though the weather tends to be coldest in Chicago between early January and mid-January, temperatures normally hover around 30 degrees. The all-time low temperature for yesterday was negative 27 degrees, while the lowest on record for today was 22 degrees.

Still, the rest of the week is likely to see more tolerable weather.

Tomorrow, highs will be around 10 degrees, rising to the lower 20s on Wednesday. On Thursday, temperatures will reach the mid 20s, with a chance of snow, said Castro.

"It may not happen still," said Castro. "We'll have to see what happens. It's going to be cold enough for snow."

Officials are urging residents of the areas affected by the wind chill to reduce their risk of developing hypothermia by avoiding the outdoors and bundling up with a hat and gloves if outdoor travel is unavoidable.

Some Chicagoland residents got snow flurries that were occasionally heavy this morning with their cold, but, as our snowless winter continues, there is not expected to be any major accumulation of snow either today or this week.

The temperature plummeted earlier this week, and next week's projections are looking even colder. As temperatures below freezing hit more consistently, the Chicago River continues to flow, which begs the question, how cold does it need to be for the river to freeze?

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